Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

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+ Details

Summary of Goodwill Balances by Reporting Segment (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Jun. 30, 2012	Sep. 30, 2011
Intangible Assets [Line Items]
Goodwill	$ 564,841	$ 549,961	$ 589,780
Business, Technology and Management
Intangible Assets [Line Items]
Goodwill	22,196	22,196
Medical and Healthcare
Intangible Assets [Line Items]
Goodwill	462,088	462,088
International K-12 and Professional Education
Intangible Assets [Line Items]
Goodwill	$ 80,557	$ 65,677